Pollution Loads of Detergents from Household Sewage

DOI Web Site 4 Citations
  • URANO Kohei
    Department of Safety and Environmental Engineering, Yokohama National University
  • KOGA Masataka
    Department of Safety and Environmental Engineering, Yokohama National University
  • SAITO Masaaki
    Department of Safety and Environmental Engineering, Yokohama National University
  • HAYASHI Sachiko
    Division of Water Pollution, Kawasaki Research Institute for Environmental Protection
  • KOIKE Junichi
    Division of Water Pollution, Kawasaki Research Institute for Environmental Protection
  • YAMADA Kenjiro
    Division of Water Pollution, Kawasaki Research Institute for Environmental Protection

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Other Title
  • 家庭からの洗剤等の汚濁負荷

Abstract

Water qualities of household sewage from many communities were analyzed, and pollution loads of detergents were investigatcd with different kinds of washing detergents.<BR>Approximately half of the daily amounts of pollutants were discharged from 7 a.m. to 11 a.m. The maximum concentrations of anionic and nonionic surfactants were 41 mg/1 and 25 mg/1, respectively. During the period when only soap was used for washing, the BOD load was increased by 10 - 13 g/person/day, but loads of anionic surfactants and phosphorous were decreased by 1.2 - 2.0 g/person/day and 0.16 -0.39 g/person/day, respectively.

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